Re: limits of watermarking (Re: First Steganographic Image in theWild)

2001-10-22 Thread Roop Mukherjee
On Sat, 20 Oct 2001, Ben Laurie wrote: If it were possible, it would indeed raise the bar. The problem is, it would seem, that it is not possible to have a provably strong means of copy protection, publicly known or otherwise. The SDMI charter can say what it wants, but that doesn't mean

Re: limits of watermarking (Re: First Steganographic Image in theWild)

2001-10-20 Thread Ben Laurie
Roop Mukherjee wrote: On Thu, 18 Oct 2001, Marc Branchaud wrote: This analogy doesn't quite hold. Copy protection need only be broken once for the protection to be disabled for a particular piece of work. Also, once the scheme is known for one piece of work, it is extremely easy

Re: limits of watermarking (Re: First Steganographic Image in theWild)

2001-10-19 Thread Ben Laurie
Marc Branchaud wrote: This analogy doesn't quite hold. Copy protection need only be broken once for the protection to be disabled for a particular piece of work. Also, once the scheme is known for one piece of work, it is extremely easy to break the scheme for other pieces, and in

Re: limits of watermarking (Re: First Steganographic Image in theWild)

2001-10-19 Thread Roop Mukherjee
On Thu, 18 Oct 2001, Marc Branchaud wrote: This analogy doesn't quite hold. Copy protection need only be broken once for the protection to be disabled for a particular piece of work. Also, once the scheme is known for one piece of work, it is extremely easy to break the scheme for other

Re: limits of watermarking (Re: First Steganographic Image in theWild)

2001-10-19 Thread Adam Back
On Fri, Oct 19, 2001 at 10:24:55AM -0400, Roop Mukherjee wrote: The analogy was intended towards publicy know provably strong means of copy protection. But no such schemes exist, and as I was arguing earlier, I don't think they will be found either because there are fundamental problems with

Re: limits of watermarking (Re: First Steganographic Image in theWild)

2001-10-18 Thread Marc Branchaud
This analogy doesn't quite hold. Copy protection need only be broken once for the protection to be disabled for a particular piece of work. Also, once the scheme is known for one piece of work, it is extremely easy to break the scheme for other pieces, and in particular to write an application

Re: limits of watermarking (Re: First Steganographic Image in theWild)

2001-10-17 Thread Bill Frantz
At 2:23 AM -0700 10/17/01, Ben Laurie wrote: The thing that gets me about all this is that exactly the same argument can be made for all existing media - and, although piracy is rife, no-one is attempting to mark videotapes or CDs, AFAIK. So why all the fuss about more modern digital media? Has